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Abstract
Objective: The main goal of the current research was to investigate the influence of a wall-bounded medium on the settling behaviour of flexible planktonic particles. The particles are permeable and immersed in a Newtonian, incompressible, and viscous fluid.
Method: This study employed the Immersed Boundary Method to analyze the interaction between the fluid and the flexible planktonic particles.
Results: The research findings revealed a notable correlation between the terminal (fall) velocity of the particles and distance amongst the confining walls, referred to as the "wall gap." Specifically, as the wall gap increased, the terminal velocity of the particle also increased. Additionally, the study demonstrated that the degree of distortion experienced by the flexible planktonic particles increased with the expansion of the wall gap.
Conclusion: In conclusion, the distance between the confining walls plays a significant role in determining the terminal velocity of the flexible planktonic particles during settling. This study highlights the importance of considering the wall gap as a crucial factor when examining the behaviour of these particles in a wall-bounded medium.
